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2014 ANNUAL REPORT 101 The EXAFSXANES experiments at the APS allowed us to confirm the coordination environments about theTcV centers on reaction of pertechnetate with sulfide in the presence of the unsaturated acids. Without these results the product identities would have been more speculative. Dr.Silvia JurissonProfessor of Chemistry and Radiology University of Missouri Distributed Partnership at a Glance ATR NSUF and Partners Facilities and Capabilities Argonne National Laboratory Advanced Photon Source Collaborators University of Missouri Silvia Jurisson principal investigator Kimberly Reinig graduate student collaborator Illinois Institute of Technology JeffTerry co-principal investigator Rachel Seibert graduate student collaborator The crotonic acid sample contains a TcO4 contaminant but also shows evidence of aTc-S bond Figure 3. Future Activities The collected data continues to be analyzed and a manuscript describing the chemistry ofTcO4 with sulfide in the presence of unsaturated acids is being drafted.The EXAFS and XANES data along with the 500-MHz NMR spectra will show that the presence of unsaturated acids can hinder the immobilization ofTc-99. This work will provide important data on the immobilization reactions of the Tc-based compounds that are important to both environmental remediation and nuclear fuel reprocessing. References 1. Y. Liu J.Terry S. Jurisson 2009 Potential Interferences on the Pertechnetate-Sulfide Immobiliza- tion Reaction. Radiochimica Acta Vol. 97 pp. 3341. Publications and Presentations 1. We are working on the manuscript and plan to submit it in 2015.